References

q_max (mg/g)

Biosorption

Metal ion

This study

12.98

Coffee husk

Ni²⁺

[57]

0.125

Dicerocaryum eriocarpum

[58]

5.86

Coconut dregs residue

[47]

6.0753

Moringa pods

[59]

23.63

Pigeon peas hulls

[60]

27.78

Citrus limetta peels

[61]

30.30

Sophora japonica

This study

11.11

Coffee husk

Zn²⁺

[57]

0.01

Dicerocaryum eriocarpum

[62]

5.965

Cassava

[63]

8.970

cabbage

[64]

14.852

Jatropha curcas L.

[60]

25.71

Sophora japonica